US5150519A - Method for producing a locked, tight pipe-connection - Google Patents

Method for producing a locked, tight pipe-connection Download PDF

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Publication number
US5150519A
US5150519A US07/685,401 US68540191A US5150519A US 5150519 A US5150519 A US 5150519A US 68540191 A US68540191 A US 68540191A US 5150519 A US5150519 A US 5150519A
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United States
Prior art keywords
pipe
press fitting
force
pressing
permanent
Prior art date
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Expired - Fee Related
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US07/685,401
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English (en)
Inventor
Heinz Unewisse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Filing date
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Assigned to MANNESMANN AKTIENGESELLSCHAFT reassignment MANNESMANN AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNEWISSE, HEINZ
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
    • F16L13/161—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F16L13/142—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element inserted into the female part before crimping or rolling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • Y10T29/49771—Quantitative measuring or gauging
    • Y10T29/49776—Pressure, force, or weight determining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49927—Hollow body is axially joined cup or tube
    • Y10T29/49929—Joined to rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53022—Means to assemble or disassemble with means to test work or product

Definitions

  • This invention relates to a process and apparatus for the manufacture of a permanent, tight pipe joint.
  • the quality of the pipe joint is essentially a function of the quality of the parts to be connected and of the O-ring used.
  • the quality of the pipe joint is also a function of how closely the assembly instructions are followed. Reference is made to the latter point in the above mentioned brochure, in Chapter 4 (Assembly Instructions), with reference to FIG. 6f. According to these instructions, the pipe must be pushed into the press fitting with a slight rotation and simultaneous pressure in the axial direction, up to the press fitting stop, since an insufficient inserted length can have an adverse effect on the strength of the joint.
  • the system makes it possible to check the position of the inserted pipe, to the extent that the different shapes of fittings, as mentioned above, have a stop located on the inside at some distance from the open end.
  • the distance of the stop from the open end is thereby selected so that it at least equals the insertion length required to achieve a correct pressing.
  • the stop thus provides resistance against further axial insertion of the pipe and is a signal for the pipe fitter that the pipe has reached the desired insertion position.
  • the object of the invention is to create a process and an apparatus for making a permanent, tight pipe joint, which automatically makes possible a check of the correct insertion position and thus guarantees the manufacture of a correct pipe joint.
  • the process according to the invention is characterized by the fact that a blocking or inhibition of the closing mechanism prevents the completion of the pressing if the pipe has not been inserted sufficiently into the press fitting, or if the two parts have assumed an incorrect insertion position. In general, it can be assumed that the pipe has been correctly inserted into the press fitting as specified by the assembly instructions, up to the stop of the press fitting, and that the correct pressing can then take place.
  • the invention proposes that after the pressing tool is placed over the joint, the pipe or the press fitting must be exposed to a positive force acting in the insertion direction by means of an apparatus located on the pressing tool, and the closing movement of the jaws can only be initiated if the insertion force assumes a value which is greater than a predetermined response level, a preset force.
  • a predetermined response level a preset force.
  • the force acting on the pipe or on the press fitting is selected so that it is at least equal to or somewhat greater than the force required for an axial displacement of the pipe or of the press fitting, taking into consideration all the parameters affecting the displacement, but is always less than the specified response level.
  • Such parameters which oppose the axial displacement include, for example, the tolerance of the outside diameter of the pipe to be inserted, the tolerance of the beaded end of the press fitting, the thickness tolerance of the inserted gasket and the friction conditions between the pipe and the gasket.
  • the possible positive axial displacement of the pipe or of the press fitting which is caused by the force exerted by the apparatus is limited, whereby this value is preferably in a range between 2-5 mm and is essentially a function of the nominal size of the pipe joint.
  • the specified limitation of the positive axial displacement which is several times smaller than the distance from the open end to the stop in the press fitting, is selected to keep the manual operability of the pressing tool in an appropriate ratio to its weight. The freedom of movement available in the vicinity of the assembly should not be further restricted by an excessively large pressing tool.
  • the invention proposes that the closing movement of the jaws can still be triggered if the distance remaining between the end surface of the pipe and the stop on the press fitting after the manual insertion of the pipe into the press fitting is equal to or less than the maximum specified distance of the positive axial displacement of the pipe or of the press fitting.
  • the distance remaining after the manual insertion must be 3 mm and the maximum specified distance of the positive axial displacement is 4 mm.
  • the closing movement of the jaws can only be triggered if, after a further manual insertion or a multiple repetition of the positive displacement, the pipe end surface comes into contact with the stop or if the remaining distance is equal to or less than the maximum specified length of the positive axial displacement of the pipe or of the press fitting.
  • FIG. 1 shows a graphic illustration of the release of the closing block with the force K as a function of the distance W;
  • FIG. 1a shows, in partial cross section, a pipe inserted up to the stop of the press fitting
  • FIG. 2 is a graph with the force K as a function of the distance W;
  • FIG. 2a shows a pipe incompletely inserted into the press fitting
  • FIG. 3 is a graph with the force K as a function of the distance W.
  • FIG. 3a is the same as FIG. 2a, but with a pipe inserted even less far.
  • FIG. 4 shows a block diagram which describes the components and functions needed for the invention:
  • FIG. 5 shows a preferred embodiment of the invention which uses an electronic force transducer
  • FIG. 6 shows a preferred embodiment of the invention which uses a mechanical force transducer.
  • FIG. 1a shows, in a partial cross section, the press fitting 1 with its bead-shaped end 2 and the gasket 3 inserted in it, as well as the stop 4 located on the inside of the press fitting 1.
  • This FIG. 1a illustrates the normal, expected case, in which the pipe 5 has been correctly inserted into the press fitting up to the stop 4, and the end surface 6 of the pipe 5 is in contact with the stop 4.
  • the pipe 5 is exposed to a changeable force acting in the direction of displacement which drives the pipe 5 and the press fitting 1 into one another.
  • the force exerted is designated by an arrow 7.
  • the press fitting 1 could also be exposed to a force, here designated by the dashed arrow 11.
  • the distance travelled during the manual insertion of the pipe 5 into the press fitting 1 is designated by the letter A, and is the same as the distance from the narrowest point in the gasket area 3 to the stop 4 of the press fitting 1.
  • the correctly inserted position in this case is checked automatically, so that the closing movement of the jaws of the tool for pressing the press fitting 1 to the pipe 5 is initiated only if the force 7 acting in the direction of displacement has reached a value which is greater than a specified response level K S .
  • the force is plotted on the ordinate and the distance on the abscissa.
  • the force 7 acting on the pipe 5 attempts to displace the pipe 5 further in the axial direction, but is prevented from doing so by the stop 4. That means that the force 7 increases sharply when pipe 5 contacts stop 4, as indicated by the force curve 10, and suddenly reaches the response level K S . As soon as the force 7 has reached the specified response level K S 9, the blocking of the closing movement of the jaws of the pressing tool is eliminated, and a correct pressing takes place.
  • FIG. 2a shows an inserted pipe 5, but in a different insertion position.
  • the pipe 5 already introduced into the pres fitting 1 is manually pushed axially from the narrowest position in the gasket area 3 by the amount x 1 into the press fitting 1.
  • the pipe 5 in violation of the assembly instructions, the pipe 5 has not been inserted all the way to the stop 4.
  • x 2 Between the end surface 6 of the pipe 5 and the stop 4 of the press fitting 1, there remains a distance designated x 2 .
  • the distance x 2 is shown larger than actual scale for purposes of clarity.
  • the pressing could be performed even if the inserted pipe 5 was in such an intermediate position, regardless of whether the intermediate position illustrated here represented an undesirable insertion position or not.
  • pipe 5 is engaged and pushed axially by a force 7 toward the stop 4 of the press fitting 1.
  • the distance to be travelled to the stop 4 is designated x 2 , whereby the sum of x 1 and x 2 equals the specified distance A from the narrowest position in the gasket area 3 to the stop 4.
  • FIG. 3a illustrates the extreme example, in which the pipe 5 has been inserted only barely, and the distance already travelled, here designated x 3 , is small compared to the distance designated x 1 in FIG. 2a.
  • the pipe 5 is positively axially displaced by the amount B, i.e. by the maximum possible distance the apparatus is capable of moving the pipe 5.
  • the pipe 5 assumes an intermediate position, here illustrated in dashed lines, which in, this case corresponds to an undesirable insertion position.
  • FIG. 3 shows that the Force 8, which is the same as for the example in FIG. 2, is still significantly less than the specified response level K S , and therefore the closing movement remains blocked, even after the end of the positive displacement by the amount B. Pressing under these conditions is impossible.
  • the pipe 5 must be displaced further toward the stop 4. This can be done by manually pushing the pipe 5 directly up to the stop 4 (See FIG. 1a) or as far as illustrated in FIG. 2a. Then the pressing tool is applied once again, and the positive displacement is repeated, whereby in the case of the manual displacement up to the stop 4, the force 7 suddenly reaches the response level K S , and the blocking of the closing movement is thereby eliminated.
  • the displacement process can be automated so that the positive displacement by the amount B can be repeated several times until the pipe 5 comes into contact with the stop 4, and then the pressing can proceed.
  • FIG. 4 shows a block diagram showing the different parts needed for the invention.
  • a press fitting holder 12 and jaws 13 to connect the press fitting to the inserted pipe are preferably part of the pressing tool.
  • An apparatus preferably mounted on the pressing tool acts as a pipe driver 14.
  • An inhibiting device 16 is used to block the closing of the jaws. The measured force is compared to a preset force 17 which is equal to the specified response level, and when the measured force reaches the preset force 17 the inhibitor stops functioning and the jaws 13 can be triggered.
  • Said pressing tool may comprise U.S. Pat. No. 3,979,814, entitled Pipe Fitting Device; U.S. Pat. No. 4,344,215, entitled Pipefitter's Tool; or U.S. Pat. No. 4,306,345, entitled Pipefitter's Tool.
  • the pipe joint system may include U.S. Pat. No. 4,570,976, entitled Sleeve-Shaped Coupling for Pipelines.
  • the force measuring device may include a force transducer such as U.S. Pat. No. 4,899,600, entitled Compact Force Transducer with Mechanical Motion Amplification; U.S. Pat. No. 4,011,577, entitled Mechanical-Electrical Force Transducer with Semiconductor-Insulating Layer-Tin Oxide Composite; or U.S. Pat. No. 4,003,487, entitled Truck Overload Protective System Having Trip Signal Sampling Means.
  • the above measuring device would preferably control a solenoid and electromagnet as an inhibitor. When the measured force reaches the preset force the inhibitor would then be removed and the pressing tool could be triggered.
  • FIG. 5 An embodiment of the invention using an electronic force transducer is shown in FIG. 5.
  • the force 100 applied to force transducer 101 is proportional to the axial force applied to the pipe and pipe fitting.
  • Force transducer 101 is connected electrically to amplifier-switch 102.
  • the amplifier-switch 102 activates solenoid 103, and electromagnet 104 is subject to a force in the direction 107.
  • inhibitor 105 is removed from trigger device 106, and the jaws can then be triggered by movement of trigger device 106.
  • An alternative force measuring system employs a spring or beam to which the pipe driving force is applied.
  • the preset force would be determined by the properties of the spring or beam, so when said spring or beam is deformed to the preset level, the inhibitor would be mechanically released, and the pressing tool could then be triggered.
  • FIG. 6 An embodiment using a preloaded spring as a measuring device is shown in FIG. 6.
  • a force 200 which is proportional to the axial force applied to the pipe and pipe fitting, is applied to inhibitor 203.
  • Said inhibitor 203 is slidably mounted on the pipe fitting holding device 207.
  • a preloaded spring 201 is held in position by stops 205 and 206. The preload corresponds to the preset force.
  • force 200 reaches the preset force said inhibitor 203 moves and is removed from trigger device 204. The pressing action can then be triggered through movement of trigger device 204.
  • One feature of the invention resides broadly in a process for the manufacture of a permanent, tight pipe joint between a smooth pipe end and a press fitting surrounding it, whereby the press fitting has a stop on its inside at some distance from its open end, where --first the pipe is inserted axially into the press fitting, and --then, by means of a pressing tool placed around the press fitting and having several jaws, the press fitting is positively and non-positively connected to the inserted pipe end by the pressing action of the jaws, which move closer together, characterized by the fact that after the application of the pressing tool, the pipe previously manually inserted into the press fitting or the press fitting pushed onto the end of the pipe, is exposed, by means of an apparatus located on the press tool, to a positive, axial, variable force, and the closing movement of the jaws for the pressing of the press fitting can only be triggered when this force assumes a value which is greater than a specified and adjustable response level.
  • Another feature of the invention resides broadly in a process characterized by the fact that the force acting on the pipe or on the press fitting must be at least equal to or somewhat greater than the force required for an axial displacement of the pipe or of the press fitting, taking into consideration all the parameters acting on the displacement, but is always less than the specified response level.
  • Yet another feature of the invention resides broadly in a process characterized by the fact that the length of the possible positive axial displacement of the pipe or of the press fitting is limited, and is several times less than the distance from the open end to the stop of the press fitting.
  • a yet further feature of the invention resides broadly in a process characterized by the fact that the closing movement of the jaws can be triggered whenever the distance remaining from the end surface of the pipe to the stop of the press fitting, after the manual insertion of the pipe into the press fitting, is less than or equal to the maximum specified length of the positive axial displacement of the pipe or of the press fitting.
  • Yet another feature of the invention resides broadly in a process characterized by the fact that if the distance remaining is greater, the closing movement of the jaws can only be triggered if the end surface of the pipe comes in contact with the stop after a further manual insertion or multiple repetitions of the positive axial displacement.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Automatic Assembly (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Resistance Heating (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Pipe Accessories (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
US07/685,401 1990-04-12 1991-04-12 Method for producing a locked, tight pipe-connection Expired - Fee Related US5150519A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012504 1990-04-12
DE4012504A DE4012504C1 (de) 1990-04-12 1990-04-12

Publications (1)

Publication Number Publication Date
US5150519A true US5150519A (en) 1992-09-29

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Application Number Title Priority Date Filing Date
US07/685,401 Expired - Fee Related US5150519A (en) 1990-04-12 1991-04-12 Method for producing a locked, tight pipe-connection

Country Status (10)

Country Link
US (1) US5150519A (de)
EP (1) EP0451930B1 (de)
JP (1) JP2706722B2 (de)
AT (1) ATE91005T1 (de)
CA (1) CA2040225A1 (de)
DE (2) DE4012504C1 (de)
DK (1) DK0451930T3 (de)
ES (1) ES2042337T3 (de)
FI (1) FI93267C (de)
NO (1) NO301851B1 (de)

Cited By (12)

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US6049962A (en) * 1995-11-04 2000-04-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co., Kg Process for connecting a pipe with a press fitting and combination of press fitting, pipe and pressing device for implementing said process
US6523261B1 (en) * 1999-07-22 2003-02-25 Mapress Gmbh & Co. Kg Method of making a metallic press fitting element
US6802112B2 (en) * 2000-11-15 2004-10-12 Continental Aktiengesellschaft Method for making a pressure-tight attachment of an elastomeric tubular piece to a connecting part
US20070090641A1 (en) * 2005-10-21 2007-04-26 Mueller Industries, Inc. Coupling, joint and method for fixedly and sealingly securing components to one another
US20100025982A1 (en) * 2008-07-31 2010-02-04 Mueller Industries, Inc. Coupling, joint and method for fixedly and sealingly securing components to one another
US20100025988A1 (en) * 2008-07-31 2010-02-04 Jamison Tommy L Coupling, joint and method for fixedly and sealingly securing components to one another
US20100253066A1 (en) * 2009-04-02 2010-10-07 Victaulic Company Crimp-Type Coupling, Crimping Tool and Method of Crimping
CN103072117A (zh) * 2013-01-10 2013-05-01 哈尔滨东安发动机（集团）有限公司 压合式管接头的拆卸工具
US8925978B2 (en) 2008-07-31 2015-01-06 Mueller Industries, Inc. Coupling and joint for fixedly and sealingly securing components to one another
US10240698B2 (en) 2016-02-17 2019-03-26 Nibco Inc. Crimp connection with one or more crimping elements
US10823316B2 (en) 2017-04-28 2020-11-03 Nibco Inc. Piping connections and connection sockets
US10865914B2 (en) 2017-04-28 2020-12-15 Nibco Inc. High temperature leak prevention for piping components and connections

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
DE9110998U1 (de) * 1991-09-05 1991-10-31 Hewing Gmbh
DE19520889A1 (de) * 1995-06-08 1996-12-12 Novopress Gmbh Verfahren und Meßgerät zur Erfassung der Einschubtiefe in einer Rohrverbindung
DE19631599C1 (de) * 1996-08-05 1997-12-18 Smb Innovative Produkte Wildau Durch Querpressung hergestellte Rohrverbindung
EP0942216A3 (de) * 1998-03-06 2001-12-19 Mapress GmbH & Co. KG Vorrichtung zum Verbinden zweier Leitungsrohre unterschiedlicher Leitungsrohrsysteme
DE19829999C1 (de) * 1998-06-24 2000-01-13 Mannesmann Ag Verfahren und Meßgerät zur Detektierung der ordnungsgemäßen Einstecktiefe in einer Rohrpreßverbindung
DE19856766C1 (de) * 1998-11-30 2000-07-20 Mannesmann Ag Rohrpreßverbindung
DE19856768C1 (de) * 1998-11-30 2000-07-20 Mannesmann Ag Rohrpreßverbindung
DE19856769C1 (de) * 1998-11-30 2000-05-25 Mannesmann Ag Rohrpreßverbindung
DE10203299C1 (de) * 2002-01-29 2003-06-26 Berg Hans Gmbh & Co Kg Verbindung von zwei zylindrischen Längenabschnitten einer sich in einem Plattenheizkörper erstreckenden Rohrleitung
JP6097033B2 (ja) * 2012-08-30 2017-03-15 パナホーム株式会社 間仕切り壁用のスタッド及び間仕切り壁の施工方法
CN111376205B (zh) * 2020-05-29 2020-08-14 胜利油田长龙橡塑有限责任公司 一种钻井高压水龙带的扣压装置

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US3404906A (en) * 1966-04-01 1968-10-08 Walter C. Hutton Expansion joint
US3916502A (en) * 1971-09-17 1975-11-04 Luigi Bagnulo Method of establishing a pipe joint
US4026006A (en) * 1972-06-26 1977-05-31 Moebius Kurt Otto Method of forming a tube joint
US4142744A (en) * 1977-10-20 1979-03-06 Corning Glass Works Method and apparatus for coupling tubular members
US4524505A (en) * 1981-03-12 1985-06-25 American Cast Iron Pipe Company Method of assembling a pipe joint
US4850096A (en) * 1987-05-23 1989-07-25 Mie Hooro Co., Ltd. Method of joining pipes

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DE2719882A1 (de) * 1977-04-29 1978-11-02 Mannesmann Roehren Werke Ag Rohrverbindung fuer leitungsrohre
US4328983A (en) * 1979-06-15 1982-05-11 Gibson Jack Edward Positive seal steel coupling apparatus and method therefor
CH639740A5 (de) * 1979-07-18 1983-11-30 Fischer Ag Georg Einrichtung zur herstellung einer rohrverbindung.
JPS5817911A (ja) * 1981-07-23 1983-02-02 Bridgestone Corp 可撓性膜堰の製造方法
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US3114566A (en) * 1961-04-21 1963-12-17 Kobe Inc Shrink fit tubing joint
US3343252A (en) * 1964-03-03 1967-09-26 Reynolds Metals Co Conduit system and method for making the same or the like
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6049962A (en) * 1995-11-04 2000-04-18 Novopress Gmbh Pressen Und Presswerkzeuge & Co., Kg Process for connecting a pipe with a press fitting and combination of press fitting, pipe and pressing device for implementing said process
US6523261B1 (en) * 1999-07-22 2003-02-25 Mapress Gmbh & Co. Kg Method of making a metallic press fitting element
US6802112B2 (en) * 2000-11-15 2004-10-12 Continental Aktiengesellschaft Method for making a pressure-tight attachment of an elastomeric tubular piece to a connecting part
US8083268B2 (en) 2005-10-21 2011-12-27 Mueller Industries, Inc. Coupling, joint and method for fixedly and sealingly securing components to one another
US20070090641A1 (en) * 2005-10-21 2007-04-26 Mueller Industries, Inc. Coupling, joint and method for fixedly and sealingly securing components to one another
US8925978B2 (en) 2008-07-31 2015-01-06 Mueller Industries, Inc. Coupling and joint for fixedly and sealingly securing components to one another
US20100025988A1 (en) * 2008-07-31 2010-02-04 Jamison Tommy L Coupling, joint and method for fixedly and sealingly securing components to one another
US20100025982A1 (en) * 2008-07-31 2010-02-04 Mueller Industries, Inc. Coupling, joint and method for fixedly and sealingly securing components to one another
US20100253066A1 (en) * 2009-04-02 2010-10-07 Victaulic Company Crimp-Type Coupling, Crimping Tool and Method of Crimping
CN103072117A (zh) * 2013-01-10 2013-05-01 哈尔滨东安发动机（集团）有限公司 压合式管接头的拆卸工具
US10240698B2 (en) 2016-02-17 2019-03-26 Nibco Inc. Crimp connection with one or more crimping elements
US10544888B2 (en) 2016-02-17 2020-01-28 Nibco Inc. Crimp connection with one or more crimping elements
US10823316B2 (en) 2017-04-28 2020-11-03 Nibco Inc. Piping connections and connection sockets
US10865914B2 (en) 2017-04-28 2020-12-15 Nibco Inc. High temperature leak prevention for piping components and connections
US11708922B2 (en) 2017-04-28 2023-07-25 Nibco Inc. Piping connections and connection sockets

Also Published As

Publication number Publication date
DE4012504C1 (de) 1991-08-14
EP0451930B1 (de) 1993-06-23
EP0451930A3 (en) 1992-02-19
FI93267C (fi) 1995-03-10
FI93267B (fi) 1994-11-30
NO911428D0 (no) 1991-04-11
DK0451930T3 (da) 1993-08-23
DE59100161D1 (de) 1993-07-29
FI911745A (fi) 1991-10-13
JP2706722B2 (ja) 1998-01-28
EP0451930A2 (de) 1991-10-16
JPH04228992A (ja) 1992-08-18
CA2040225A1 (en) 1991-10-13
ES2042337T3 (es) 1993-12-01
ATE91005T1 (de) 1993-07-15
NO911428L (no) 1991-10-14
NO301851B1 (no) 1997-12-15
FI911745A0 (fi) 1991-04-11

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